diff --git a/src/main/java/cn/craccd/mongoHelper/utils/MongoHelper.java b/src/main/java/cn/craccd/mongoHelper/utils/MongoHelper.java
index de784e3c00b9870bcbe9e92a1d8e34e7c9ed3ff7..cc2559e4b47aeb1c743554716fc48e3368473f39 100644
--- a/src/main/java/cn/craccd/mongoHelper/utils/MongoHelper.java
+++ b/src/main/java/cn/craccd/mongoHelper/utils/MongoHelper.java
@@ -933,7 +933,7 @@ public class MongoHelper implements ApplicationContextAware {
 	 * @return List 列表
 	 */
 	public List<String> findIdsByQuery(Query query, Class<?> clazz) {
-		Set<String> ids = new HashSet<String>();
+		List<String> ids=new ArrayList<String>();
 		query.fields().include("id");
 		logQuery(clazz, query);
 		List<?> list = getMongoTemplate().find(query, clazz);
@@ -941,7 +941,7 @@ public class MongoHelper implements ApplicationContextAware {
 			ids.add((String) ReflectUtil.getFieldValue(object, "id"));
 		}
 
-		return new ArrayList<String>(ids);
+		return ids;
 	}
 
 	/**